64688920

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{1811}}^1$

素因数の和:1888

約数の個数: 64

約数和(自身を含む): 156556800

約数和(自身を除く): 91867880

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 760, 893, 940, 1786, 1811, 1880, 3572, 3622, 4465, 7144, 7244, 8930, 9055, 14488, 17860, 18110, 34409, 35720, 36220, 68818, 72440, 85117, 137636, 170234, 172045, 275272, 340468, 344090, 425585, 680936, 688180, 851170, 1376360, 1617223, 1702340, 3234446, 3404680, 6468892, 8086115, 12937784, 16172230, 32344460, 64688920]

約数ペア:

[(1, 64688920), (2, 32344460), (4, 16172230), (5, 12937784), (8, 8086115), (10, 6468892), (19, 3404680), (20, 3234446), (38, 1702340), (40, 1617223), (47, 1376360), (76, 851170), (94, 688180), (95, 680936), (152, 425585), (188, 344090), (190, 340468), (235, 275272), (376, 172045), (380, 170234), (470, 137636), (760, 85117), (893, 72440), (940, 68818), (1786, 36220), (1811, 35720), (1880, 34409), (3572, 18110), (3622, 17860), (4465, 14488), (7144, 9055), (7244, 8930)]